<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin: 0px;
    }
    /* 顶部部分 */
    .topnav{
        margin-top: 30px;
        margin-left: 20px;
        display: flex;
        flex-direction: row; 
		justify-content:flex-start;
    }
    .topnav img:nth-child(1){
        width: 20px;
        height: 20px;
    }
    .topnav span:nth-child(2){
        margin: 0 auto;
        font-size: 20px;
        color: #505050;
        font-weight: 900;
    }
    /* 分割线1  */
    .line1{
        height: 15px;
        background-color: #f2f4f8;
        margin-top: 18px;
    }
    /* 栏目 */
    .column{
        display: flex;
        flex-direction: column;
        margin-left: 20px;
        margin-top: 15px;
        color: #9d9e9e;
    }
    .column>img{
        height: 70px;
        width: 120px;
        margin-top: 30px;
    }
    .column span:nth-child(1){
        color: #505050;
        font-size: 23px;
        font-weight: 600;
    }
    .column span:nth-child(3){
        position: relative;
        top: -70px;
        left: 140px;
        color: #505050;
        font-size: 20px;
    }
    .column span:nth-child(4){
        position: relative;
        top: -60px;
        left: 140px;
    }
</style>
<body>
    <!-- 顶部部分 -->
    <div class="topnav">
        <img src="../jpg/返回.png" >
        <span>收藏</span>
    </div>
    <!-- 分割线1 -->
    <div class="line1"></div>
    <!-- 栏目 -->
    <div class="column">
        <span>知识清单</span>
        <img src="../jpg/海.png" >
        <span>默认知识清单</span>
        <span>共2条知识点</span>
    </div>
</body>
</html>